#2f559b

Color #2f559b

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 16.43 Nearest Tailwind class sky-800 #00598a · ΔE 7.2

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#2f559b

RGB

rgb(47, 85, 155)

HSL

hsl(218.9, 53.5%, 39.6%)

HSV / HSB

hsv(218.9, 69.7%, 60.8%)

CMYK

cmyk(69.7%, 45.2%, 0%, 39.2%)

LAB

lab(36.87, 10.77, -42.22)

LCH

lch(36.87, 43.57, 284.31)

OKLCH

oklch(45.9%, 0.122, 261.47)

HWB

hwb(218.9, 18.4%, 39.2%)

Harmony colors

Complementary

#9b752f

Analogous

#2f8b9b

#2f559b

#3f2f9b

Triadic

#2f559b

#9b2f55

#559b2f

Split-complementary

#2f559b

#9b3f2f

#8b9b2f

Tetradic

#2f559b

#752f9b

#9b752f

#559b2f

Square

#2f559b

#9b2f8b

#9b752f

#2f9b3f

Shades

Color #2f559b mixed toward black.

#274781

#1f3967

#172a4e

#101c34

#080e1a

Tints

Color #2f559b mixed toward white.

#3b6bc2

#6188cf

#89a6db

#b0c4e7

#d8e1f3

Tones

Color #2f559b mixed toward gray.

#385892

#415a89

#4a5d80

#536077

#5c626e

Accessibility

Aa White text on this color

7.26:1

Aa Black text on this color

2.89:1

White text reads better on this background (7.26:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#43438e · ΔE 8.7

Deuteranopia

#403d8b · ΔE 10.2

Tritanopia

#328380 · ΔE 29.5

Achromatopsia

#575757 · ΔE 22.2

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #2f559b;

Tailwind (arbitrary value)

bg-[#2f559b]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#2f559b (#2f559b) is rgb(47, 85, 155) in RGB.

No, #2f559b is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #2f559b, or check how it holds up for accessibility.

Generate a palette → Check contrast